inverse response speaker flattening

[Martin Czech]

Thanks to all who have responded.
This is still a great list!


http://www.tactaudio.com/

So, digital amps exist and they work.
But they are still expensive.

Room correction DSPs exist too, see RCS
on the same site.

Great work, but a bit expensive for me!

m.c.


:::Date: Fri, 12 May 2000 12:53:28 +0200
:::From: Hallgeir Helland <hhelland at mailandnews.com>
:::To: Martin Czech <czech at Micronas.Com>
:::Subject: Re: inverse response speaker flattening
:::Content-Transfer-Encoding: 7bit
:::
:::Hi Martin,
:::
:::I have read about some HiFi amp called TacT Millenium.
:::This is supposed to be a digital amp, making PWM from
:::a digital input signal, and running this right to the 
:::speakers.
:::And furthermore they have also made a PC app. where you
:::can measure the room acoustics and download it into the 
:::amp to equalize the response.
:::Haven't heard it myself, but the magazine said it was the
:::greatest since sliced bread. But then again, these guys 
:::only want to sell the stuff. I don't know.
:::
:::There's probably a web site on it somewhere.....
:::
:::hope this was of some help-
:::Hallgeir
:::
:::Martin Czech wrote:
:::> 
:::> There is one thing I wonder about:
:::> 
:::> You have music from digital sources all the way, till power amplifier. It
:::> would be no problem to ship a little digital in/out box with a measuring
:::> microphone, so that anyone can measure the frequency response of his room
:::> and his speakers, the box takes the inverse to filter the CD data. That
:::> should give an almost ideal response for that single measuring point in
:::> space and hopefully around it.
:::> 
:::> Of course, once the speakers are flattened, any personal taste could be
:::> applied as well (bath tub).
:::> 
:::> One problem could be that shitty bass chassis could not take the needed
:::> power...
:::> 
:::> I have never seen any advertisement for such an apparatus, it seems that
:::> something like that simply does not exist.
:::> 
:::> Another question:
:::> 
:::> In the 70ties people thought about switching amplifiers.
:::> I.e. DAC amplifiers. The audio chain would be digital up to
:::> the speakers. Are there any reasonable advances/designs
:::> today?
:::> 
:::> m.c.
:::
:::-- 
:::HELLAND MUSIKK TEKNOLOGI
:::-=  Hallgeir Helland  =-
:::hhelland at mailandnews.com